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Frequency Converters (50:60hz)

A frequency converter, converts alternating current (AC) from one frequency to another.

Aerospace / Aircraft Ground Power Units (400hz)

When parked on the ground an aircraft cannot use the normal 50Hz mains power as it needs 400Hz power.

Lift Power Systems

These purpose built systems are designed to supply power to emergency evacuation lifts.

Uninterruptible Power Supply

An uninterruptible power supply (UPS) system provides power to a critical load.

Variable Speed Drives

Adjustable speed drive (ASD) or variable-speed drive (VSD) describes equipment used to control the speed of machinery.

Uninterruptible Power Supply (UPS) Systems

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How do UPS Systems work?

An uninterruptible power supply, or UPS system, provides power to a critical load when the input power source, typically the mains power fails. The true online UPS system provides continuous protection from input power interruptions or surges. This protection is achieved by means of storage batteries and associated electronic circuitry.

Power Systems International Limited was established in the UK in 1986, the brand reflecting our strong position in both the international markets where we operated and the reliability of the power systems products provided for critical loads of all types.

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